A hammer union is provided for reducing and, in most instances, eliminating the likelihood of sealing ring displacement during fluid operations. The hammer union comprises a male pipe member, a union nut placed over the male pipe member, a female pipe member, and a sealing ring. The female pipe member includes a sealing pocket having an arcuate portion, a vertical portion, a base, and a recessed groove. The sealing ring is captured between the male pipe member and the female pipe member such that the sealing ring engages the sealing pocket of the female pipe member at each of the arcuate portion, the vertical portion, the base, and the recessed groove.

A watering nozzle including a handle configured to be grasped by a user, an inlet connector including a flange rigidly coupled to the handle, and an inlet engagement feature, a swivel coupling including a garden hose thread and a swivel shoulder adjacent a swivel opening arranged concentrically about a central axis, the swivel coupling rotatable relative to the handle about the central axis, and an insert shank including a swivel seal in sealed contact with the swivel coupling, a first shank shoulder in contact with the swivel shoulder, and a shank engagement feature in rigid engagement with the inlet engagement feature.

A watering nozzle including a handle configured to be grasped by a user, an inlet connector including a flange rigidly coupled to the handle, and an inlet engagement feature, a swivel coupling including a garden hose thread and a swivel shoulder adjacent a swivel opening arranged concentrically about a central axis, the swivel coupling rotatable relative to the handle about the central axis, and an insert shank including a swivel seal in sealed contact with the swivel coupling, a first shank shoulder in contact with the swivel shoulder, and a shank engagement feature in rigid engagement with the inlet engagement feature.

A tube fitting device for facilitating tube connection position determination includes a fitting body, a pair of fixing nuts, and an O-ring. The fitting body has a cylindrical channel portion into which a first tube and a second tube may be inserted, the cylindrical channel portion comprising an accommodation groove formed therein. Each fixing nut is rotatably coupled to a respective open end of the fitting body and surrounds the first tube and the second tube, respectively. The O-ring is mounted on the accommodation groove and has an inner diameter smaller than that of the cylindrical channel portion such that the inner surface of the O-ring protrudes inside the fitting body to facilitate determining positions of the first tube and the second tube to be inserted into the cylindrical channel of the fitting body.

The present invention includes: a first part (11) which has a hollow cylindrical shape and circumscribes or is inscribed in a pipe (26); and a second part (15) which has a cylindrical shape and circumscribes or is inscribed in the first part (11), wherein inclined portions (23), which have inclination angles that can hinder the second part (15) from retreating from the first part (11), are formed between the first part (11) and the second part (15) so as to correspond to each other. That is, when a pipe sealing device is mounted to the pipe and the second part (15) is retreated from the pipe (26), the inclined portion (23) of the first part (11) and the second part (15) push against each other, the first part (11) is pressed against and fixed to the pipe, and the second part (15) can no longer retreat from a limited line due to inclination angles. Connecting or closing pipes typically involves making screws or welding, and thus requires many tools and consumes much time. In contrast, such work can be conveniently performed using the pipe sealing device of the present invention. Also, a fluid inlet and outlet portion (43) is provided, and thus a pipe sealing test can be easily performed for each section.

The present invention includes: a first part (11) which has a hollow cylindrical shape and circumscribes or is inscribed in a pipe (26); and a second part (15) which has a cylindrical shape and circumscribes or is inscribed in the first part (11), wherein inclined portions (23), which have inclination angles that can hinder the second part (15) from retreating from the first part (11), are formed between the first part (11) and the second part (15) so as to correspond to each other. That is, when a pipe sealing device is mounted to the pipe and the second part (15) is retreated from the pipe (26), the inclined portion (23) of the first part (11) and the second part (15) push against each other, the first part (11) is pressed against and fixed to the pipe, and the second part (15) can no longer retreat from a limited line due to inclination angles. Connecting or closing pipes typically involves making screws or welding, and thus requires many tools and consumes much time. In contrast, such work can be conveniently performed using the pipe sealing device of the present invention. Also, a fluid inlet and outlet portion (43) is provided, and thus a pipe sealing test can be easily performed for each section.

Example aspects of riser support assembly and a riser system are disclosed. The riser support assembly can comprise a riser support pipe comprising a cylindrical sidewall defining a first end, an opposing second end, and an intermediate portion extending therebetween; and a mount defining an arm and a pedestal, the arm extending from the intermediate portion of the cylindrical sidewall, the pedestal extending from the arm distal to the riser support pipe, the pedestal configured to engage a mounting surface.

A split coupler, and methods of making and using such a split coupler, whereby the split coupler includes a first semi-cylindrical member, a second semi-cylindrical member, and an interlocking assembly configured to interlock the first and second semi-cylindrical members to form a substantially cylindrical coupler having a coupler inner surface which defines a throughbore. Additionally, the split coupler can include spiral threads coupled to the coupler inner surface. Furthermore, the split coupler can include a flange inwardly extending from the coupler inner surface.

Apparatuses, devices, systems, and methods are described that provide fluid flow connectors. An example fluid flow connector includes a first connector body that defines a first inner bore and a first plurality of outer bores. The example connector further includes a second connector body that defines a second inner bore and a second plurality of outer bores. In an operational configuration in which the first connector body is attached to the second connector body, the first inner bore mates with the second inner bore to form a first fluid channel, and each of the first plurality of outer bores mate with a respective one of the second plurality of outer bores to form a second fluid channel. The example connector further includes a sealing mechanism that, in the operational configuration, seals the first fluid channel from the second fluid channel and seal the second fluid channel from an external environment of the fluid flow connector.

Provided is a connection structure of a metal corrugated pipe, including: a first connection member including a first connection member inner guide straight pipe and a first connection member inner inclined pipe; the metal corrugated pipe inserted into the first connection member inner guide straight pipe and the first connection member inner inclined pipe of the first connection member; a second connection member fitted on an outer side of the metal corrugated pipe, and screw-coupled to the first connection member; a metal packing fitted on the outer side of the metal corrugated pipe, and inserted into the first connection member inner guide straight pipe and the first connection member inner inclined pipe so as to be pipe-reduced to form a curved surface; and a separation prevention ring configured to fix the metal packing to prevent the metal packing from being separated.